var assert = require("assert")
var Buffer = require("safer-buffer").Buffer
var join = require("path").join
var iconv = require(join(__dirname, "/../"))

var baseStrings = {
  empty: "",
  hi: "Γειά!",
  ascii: "\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f" +
           " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\x7f",
  greek: "αβγδεζηθικλμνξοπρστυφχψωΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩάέήίόύώΆΈΉΊΌΎΏϊϋΪΫ",
  untranslatable: "Åçþÿ¿"
}

var encodings = [{
  name: "windows1253",
  variations: ["windows-1253", "win-1253", "win1253", "cp1253", "cp-1253", 1253],
  encodedStrings: {
    empty: Buffer.from(""),
    hi: Buffer.from("\xc3\xe5\xe9\xdc!", "binary"),
    ascii: Buffer.from(baseStrings.ascii, "binary"),
    greek: Buffer.from("\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0\xf1\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xdc\xdd\xde\xdf\xfc\xfd\xfe\xa2\xb8\xb9\xba\xbc\xbe\xbf\xfa\xfb\xda\xdb", "binary")
  }
}, {
  name: "iso88597",
  variations: ["iso-8859-7", "greek", "greek8", "cp28597", "cp-28597", 28597],
  encodedStrings: {
    empty: Buffer.from(""),
    hi: Buffer.from("\xc3\xe5\xe9\xdc!", "binary"),
    ascii: Buffer.from(baseStrings.ascii, "binary"),
    greek: Buffer.from("\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0\xf1\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xdc\xdd\xde\xdf\xfc\xfd\xfe\xb6\xb8\xb9\xba\xbc\xbe\xbf\xfa\xfb\xda\xdb", "binary")
  }
}, {
  name: "cp737",
  variations: ["cp-737", 737],
  encodedStrings: {
    empty: Buffer.from(""),
    hi: Buffer.from("\x82\x9c\xa0\xe1!", "binary"),
    ascii: Buffer.from(baseStrings.ascii, "binary"),
    greek: Buffer.from("\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xab\xac\xad\xae\xaf\xe0\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\xe1\xe2\xe3\xe5\xe6\xe7\xe9\xea\xeb\xec\xed\xee\xef\xf0\xe4\xe8\xf4\xf5", "binary")
  }
}]

describe("Test Greek encodings", function () {
  encodings.forEach(function (encoding) {
    var enc = encoding.variations[0]
    var key = "hi"
    describe(encoding.name + ":", function () {
      it("Convert from buffer", function () {
        for (var key in encoding.encodedStrings) {
          assert.strictEqual(iconv.decode(encoding.encodedStrings[key], enc),
            baseStrings[key])
        }
      })

      it("Convert to buffer", function () {
        for (var key in encoding.encodedStrings) {
          assert.strictEqual(iconv.encode(baseStrings[key], enc).toString("binary"),
            encoding.encodedStrings[key].toString("binary"))
        }
      })

      it("Try different variations of encoding", function () {
        encoding.variations.forEach(function (enc) {
          assert.strictEqual(iconv.decode(encoding.encodedStrings[key], enc), baseStrings[key])
          assert.strictEqual(iconv.encode(baseStrings[key], enc).toString("binary"), encoding.encodedStrings[key].toString("binary"))
        })
      })

      it("Untranslatable chars are converted to defaultCharSingleByte", function () {
        var expected = baseStrings.untranslatable.split("").map(function (c) { return iconv.defaultCharSingleByte }).join("")
        assert.strictEqual(iconv.encode(baseStrings.untranslatable, enc).toString("binary"), expected) // Only '?' characters.
      })
    })
  })
})
